Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.
Motherless Winnie goes to summer camp with her two best friends. She has lots of fun--rock climbing, swimming, going to art class, making a new friend--but things become uncomfortable after she tells a lie and then can't stop lying. Not only does she say her mother is alive, she also claims Mom is a famous artist.